Non-Destructive Testing

Non-Destructive Testing (NDT) is inspection, test, or evaluation of materials, components or assemblies for discontinuities, or differences in characteristics without destroying the serviceability of the sample. Standard radiographic X-ray imaging provides a black and white intensity or density image of the inspected sample where defects, impurities or cracks are observed if the resolution and the signal over the noise of the image is appropriate. The spectral NDT X-ray imaging provides based on photon counting provides additional material information of the samples together with a superior contrast and high spatial resolution. The spectral material information is used to discriminate different materials that can be used to identify the materials of interest or to calculate their amount in the sample. A single exposure high resolution spectral image taken with WidePIX 5x5 CdTe of a PCB unveils different components in different colors.

Advanced NDT solutions

ADVACAM brings to the market a new range of X-ray imaging cameras that are optimized for composite material testing. Light materials such as carbon fibres, epoxies, etc. are easily revealed in a great detail. Even challenging defects such as deep laminate wrinkles, kissing-bonds, delaminations, porosity, foreign objects and micro-cracks in the soft materials can be detected with spatial resolution of 55 µm or better. Similarly to its application in biology, the sensitivity to low energies is useful for non-destructive testing (NDT). Combining the sensitivity to low X-ray energy photons with the very high dynamic range of photon counting detectors creates a powerful tool for NDT in airspace industry and elsewhere.
Contrary to the classical X-ray imaging setups, the robotic system produced by Radalytica s.r.o. gives nearly absolute flexibility of viewing angles. Therefore, these robots allow X-raying from different perspectives, to better localise defects. Moreover, robots further open possibility of using 3D imaging techniques such as computed tomography or tomosynthesis. These are methods commonly used in X-ray imaging, but with limited applicability on large complicated shapes. Robots help overcome this limit. The robotic systems could be used in quality control labs or built into production lines.
Radalytica's robotic system prototype inspecting a glider aileron

Radalytica's robotic system prototype inspecting a glider aileron. The robot on left holds a compact X-ray tube. The X-ray imaging detector is mounted on the robotic arm on right. The final X-ray image reveals voids and impurities in the internal composite structure.

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